Chevrons and White Lines:

Chevrons are white diagonal stripes painted on the road, often used to separate lanes or guide traffic. When these chevrons are bordered by solid white lines, they indicate a restricted area where vehicles should not enter except in an emergency. 

Broken White Lines:

If the chevrons are bordered by broken white lines, it means you should not enter unless it's necessary and you can see that it is safe to do so. 

Parking Prohibited:

Parking within an area marked with chevrons, especially when bordered by solid lines, is generally prohibited and can result in a penalty. 

Highway Code:

The Highway Code and other traffic regulations provide guidance on the meaning and use of chevron markings. 

Safe Practice:

It's always best to avoid parking within chevron markings to ensure safe and efficient traffic flow, and to avoid potential penalties.